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# Calamine lotion ## Overview Calamine lotion is a topical skin protectant containing zinc oxide and ferric oxide (which provides the characteristic pink color). It functions as a mild astringent and antipruritic agent to soothe irritated skin. ## Primary Indications * Itching and minor irritation associated with contact dermatitis (e.g., poison ivy, poison oak, poison sumac). * Insect bites or stings. * Minor skin irritations. ## Adult Dosing * Apply a thin layer to the affected area 3–4 times daily as needed. * Shake bottle well before use to ensure uniform suspension. ## Pediatric Dosing * **Children ≥ 6 months:** Apply 3–4 times daily as needed. * **Infants < 6 months:** Consult a pediatrician before use. * No standardized "maximum" dose exists; however, application should be limited to the affected areas. ## Dose Adjustments * No renal or hepatic adjustments required for topical application. * Use with caution in patients with known sensitivity to zinc or other lotion ingredients. ## Contraindications * Hypersensitivity to any component of the formulation. * Do not apply to deep, puncture wounds, animal bites, or serious burns. * Do not apply to broken, blistered, or weeping skin without medical guidance, as the lotion may cause crusting or trapping of debris. ## Adverse Effects * **Common:** Dryness of the skin, mild stinging, or irritation upon application. * **Rare:** Allergic contact dermatitis. ## Key Drug Interactions * None known due to limited systemic absorption. * Avoid applying other topical medicated products (e.g., corticosteroids) concurrently unless directed by a provider, as the lotion may interfere with drug absorption. ## Monitoring * Monitor for signs of worsening irritation, infection (erythema, warmth, purulence), or lack of improvement after 7 days of use. ## Clinical Pearls * **Drying Agent:** Calamine is highly drying; avoid use on excessively dry or chapped skin. * **Application:** Allow to dry completely until a powder residue forms. * **Removal:** Use soap and water to wash away residue between applications to prevent buildup. * **Ocular Safety:** Avoid contact with eyes, nose, mouth, and other mucous membranes. * **Uncertainty:** For extensive dermatological conditions, the efficacy of calamine is inferior to topical corticosteroids or oral antihistamines; clinical judgment should dictate when to escalate therapy. *** **Educational Disclaimer:** This information is for educational purposes. Always verify current prescribing information, package inserts, and local institutional protocols, as clinical guidelines and formulation additives may change. Consult a licensed healthcare provider before initiating therapy.